Processing technology and characteristic evaluation of absorbent cotton

Hemostasis is the critical steps for trauma and emergency. When injured person is under circumstance of hemorrhage, the important step is immediate hemostasis because mild hemorrhage makes patient feeling pain and dizziness while abundant hemorrhage would lead to coma, shock even death. Therefore, hemostasis becomes an important rescue issue to bleeding patient. This study uses Polylactic acid (PLA) and Polyacrylate (HPA) to prepare PLA/HPA nonwoven fabric with different weight ratios of 100/0,95/5,90/10, 85/15, 80/20 wt%/wt%, following with discussions of tensile strength, tearing strength, softness, air permeability, water vapor transmittance, water absorption, water retention. The results show that, 80 wt%/20 wt% of PLA fiber and HPA fiber was the optimal blending ratio, and its water absorption, water retention and softness were respectively improved by 323 %, 245 % and 22.3 % by contrast with 100 wt%/0 wt% of PLA and HPA; but its tensile strength was decreased by 63 % even that still reaches the strength of absorbent cotton.